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PhysicalScience8

QuestionAnswer
Work Occures when a force causes an object to move in the direction of the force
Joule The unit used to express work in newton-meter
Power The rate at which work is done
Watt The unit used to express power
Machine A device that helps make work easier by changing the size or direction of a force
Work Input The work you can do on a machine
Work Output The work done by a machine
Mechanical Advantage Tells you how mant times the machine multiplies force; compares input force with out put force
Mechanical Efficiency A comparison of a machines work output with the work input
Lever A simple machine consisting of a bar that pivots at a fixed point
Inclined Plane A simple machine that is a straight slanted surface
Wedge A double inclined plane that moves, whened moved through a distance it applies force through an object
Screw An inclined plane that is wrapped in a spiral
Wheel and Axle A simple machine consisting of two circular objects of different sizes
Pulley Simple machine consisting of a grooved wheel that holds a rope or a cable
Compound Machine Machines that are made of two ro more simple machines
Created by: coachrj
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